Locked
---- On Thu, 19 Mar 2020 19:06:37 -0400 [hidden email] wrote ----
The OpenGL class has two example methods on the class side. Trying these is what I meant with "make sure it works in 32 bits":example "OpenGL example" "A very simple OpenGL example" | ogl frames startTime deltaTime framesPerSec bounds font | font := StrikeFont familyName: 'Atlanta' pointSize: 11. bounds := 0@0 extent: 400@400. ogl := OpenGL newIn: bounds. ogl ifNil:[^self error: 'Unable to create renderer']. [frames := 0. startTime := Time millisecondClockValue. [Sensor anyButtonPressed] whileFalse:[ "start counting at second frame since first frame is penalized by the upload of the bitmap font outside of ogl." frames = 1 ifTrue:[startTime := Time millisecondClockValue]. ogl beginFrame. "--- this is the actual scene content ---" ogl glDisable: GLDepthTest. "for the simple example only" ogl glDisable: GLLighting. "for the simple example only" ogl glClearColor: 1.0 with: 1.0 with: 1.0 with: 1.0. ogl glClear: GLColorBufferBit. ogl glRotatef: 5.0 with: 0.0 with: 0.0 with: 1.0. ogl glColor3f: 1.0 with: 0.0 with: 0.0. ogl glBegin: GLPolygon. ogl glVertex2f: -0.7 with: -0.7. ogl glVertex2f: 0.7 with: -0.7. ogl glVertex2f: 0.7 with: 0.7. ogl glVertex2f: -0.7 with: 0.7. ogl glEnd. "--- here is the 2d overlay setup ---" ogl glMatrixMode: GLProjection. ogl glPushMatrix. ogl glLoadIdentity. ogl glMatrixMode: GLModelview. ogl glPushMatrix. ogl glLoadIdentity. ogl glTranslated: -1 with: 1 with: 0.0. ogl glScaled: (2.0 / bounds width) with: (-2.0 / bounds height) with: 1.0. ogl glDisable: GLDepthTest. ogl glEnable: GLBlend. ogl glBlendFunc: GLOne with: GLOneMinusSrcAlpha. "--- here is the 2d overlay rendering ---" deltaTime := Time millisecondsSince: startTime. framesPerSec := frames * 1000 / (deltaTime max: 1) asFloat. "@@@@: Fixme. It appears as if #drawString: depends on glColor being set. Makes no sense but I'm not going to figure this out - probably some mishap wrt. GLLighting being disabled." ogl glColor3f: 0.0 with: 0.0 with: 0.0. ogl drawString: frames printString, ' frames: ', (framesPerSec truncateTo: 0.1), ' fps' at: 0@font height@0 font: font color: Color black. ogl glDisable: GLBlend. ogl glMatrixMode: GLModelview. ogl glPopMatrix. ogl glMatrixMode: GLProjection. ogl glPopMatrix. ogl glMatrixMode: GLModelview. "--- end the end frame operations" ogl endFrame. ogl swapBuffers. frames := frames + 1. ]. ] ensure:[ogl destroy].
- Bert -On Thu, Mar 19, 2020 at 5:57 AM gettimothy via Squeak-dev <[hidden email]> wrote:Hi Subbu,
I will keep it in mind. My focus now is on building openGL tutorial programs such as this: https://paroj.github.io/gltut/index.html
or this: https://www.linuxjournal.com/content/introduction-opengl-programming
the exercise is already giving me insight into the Squeak openGL and should be of use when I get to the FFI part.
cheers,
t---- On Thu, 19 Mar 2020 04:00:06 -0400 K K Subbu <[hidden email]> wrote ----On 18/03/20 5:28 PM, gettimothy via Squeak-dev wrote:Have you tried booting 32-bit Ubuntu from a live USB (4GB+) drive for
>
> Step 1: verify working on 32 bit machines. Well, I do not have a 32 bit
> machine that can run squeak (old pentium laptop --the kind that catches
> on fire) and I tried running side-by-side on Ubuntu.
> 64 bit runs fine, 32 bit tries to launch and cannot find the display
> driver. I could install 32 bit compat libs on my Slackware distro boot,
> but I prefer to keep that pristine.
> I don't care for fighting with Ubuntu, so if anybody knows a quick fix,
> much appreciated. I can get the exact error if needed, just need to
> reboot and retry.
your experiments?
Regards .. Subbu